22109915 has 8 divisors (see below), whose sum is σ = 26606400. Its totient is φ = 17638272.

The previous prime is 22109909. The next prime is 22109921. The reversal of 22109915 is 51990122.

It is an interprime number because it is at equal distance from previous prime (22109909) and next prime (22109921).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22109915 - 2¹⁴ = 22093531 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4190 + ... + 7859.

It is an arithmetic number, because the mean of its divisors is an integer number (3325800).

Almost surely, 2^22109915 is an apocalyptic number.

22109915 is a deficient number, since it is larger than the sum of its proper divisors (4496485).

22109915 is a wasteful number, since it uses less digits than its factorization.

22109915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12421.

The product of its (nonzero) digits is 1620, while the sum is 29.

The square root of 22109915 is about 4702.1181397323. The cubic root of 22109915 is about 280.6698037600.

The spelling of 22109915 in words is "twenty-two million, one hundred nine thousand, nine hundred fifteen".